I am also using the setup Dan describes, though I am going at it slightly different.
I am using WebShield in a pure relay mode.
Internet Email ---> WebShield ---> Imail SMTP(IN)
Imail SMTP(OUT) ---> WebShield ---> Internet
Both programs are running on the same box so I have only the loopback and local
machine address in the ALLOW ADDRESSES dialog.
All of my intranet clients are using an alternative SMTPOUT port on IMAIL (1025 for
example) or are using Web Mail and I force Imail to deliver to Webshield by
specifiying delivery to the localip:25.
If your firewall allows it, your clients needing SMTP send from the internet, could
configure their mail client to this alternative port and use SMTP AUTH.
Two disadvantages to this method.
1) If there is a virus in the email it will be delivered to Imail, placed in the logs
and then forwarded to WebShield. (Webshield will catch it and deliver the VIRUS FOUND
message back to Imail for distribution). I am also running Real-time file protection
on the server so the file would be caught if opened on the server while reading
message logs.
2) If there is a virus in the email and the recipient is in a domain hosted by Imail,
it will be delivered and never scanned (desktop scanner will have to catch).
If anybody can tell me that I have a glaring methodology error staring me in the face,
please do.
Barry Elk
>If you are using SMTP authentication then you should probably have used
>Declude.
>
>If you don't need SMTP auth you can enable the anti spam relay and add all
>of your IP ranges. Then just add your domain name(s) to the hosted domains
>list. Put each domain name in twice, once the normal way (domain.com) and
>once with a dot added on the end (domain.com.)
>
>This setup allows anyone using an IP in the internal ranges to relay through
>WebShield and everyone to send to your hosted domains.
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED]]On Behalf Of Chris Knoblock
>Sent: Wednesday, May 16, 2001 9:27 AM
>To: Imail Forum
>Subject: [IMail Forum] Anti-Virus
>
>
>Hello all,
>
>Recently we installed Webshield SMTP, a virus software that scans email
>attchments for viruses. This seemed fine but after awhile spammers would
>down the server by trying to relay off of our server. The spam was not
>relay due to the authentication setup through Imail, but the Webshield
>software has no method of authentication. So therefore it would continue to
>attempt to send bogus messages for sometime eventually having the number of
>messages build up and bring the server to its knees trying to scan all of
>these. Anyway, has anyone else used this software and been able to
>alleviate this problem. Thanks.
>
>-Chris
>
--
LT Barry Elk
VFC-12 OPSO/SecMgr/ISSM
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